---
title: "BIP39 Word #1906: until — Seed Phrase Mnemonic Word"
url: "https://bip39-phrase.com/bip39-word/until/"
language: "en"
updated: "2026-10-19T00:00:00+00:00"
---

Word #1906 11101110001 

# until — BIP39 word #1906

"**until**" is word #1906 of the 2048 words in the official BIP39 English wordlist, between [unlock](/bip39-word/unlock/) and [unusual](/bip39-word/unusual/). In a seed phrase it stands for the 11-bit value `11101110001`, decimal index 1905\. 

/ənˈtɪl/  · _preposition:_ up to a particular time or event 

[Russian](/ru/ "The BIP39 wordlist with Russian translations"): пока 

## Binary Representation

Seven 1-bits and four 0-bits; 330 of the 2048 indexes have exactly seven 1-bits.

One wrong bit turns it into (leftmost bit first):

[hotel](/bip39-word/hotel/)[purchase](/bip39-word/purchase/)[soda](/bip39-word/soda/)[wreck](/bip39-word/wreck/)[tower](/bip39-word/tower/)[tuition](/bip39-word/tuition/)[umbrella](/bip39-word/umbrella/)[upset](/bip39-word/upset/)[upgrade](/bip39-word/upgrade/)[unveil](/bip39-word/unveil/)[unlock](/bip39-word/unlock/) 

Position

Hex Index

0x771

4-Letter Prefix

unti

## About "until" in BIP39

- "until" has 5 letters, but the first three, **"unt"**, already identify it, because **"un"** also begins 17 other words, among them [unable](/bip39-word/unable/), [unaware](/bip39-word/unaware/), [uncle](/bip39-word/uncle/) and [uncover](/bip39-word/uncover/). Three letters are enough for only 604 of the 2048 words.

## Word #1906 in the Other 9 BIP39 Wordlists

[Czech](/czech/) vysoko 

[French](/french/) tousser 

[Italian](/italian/) tumulto 

[Japanese](/japanese/) もどる 

[Korean](/korean/) 학년 

[Portuguese](/portuguese/) torto 

[Spanish](/spanish/) treinta 

[Traditional Chinese](/chinese-traditional/) 帳 

[Simplified Chinese](/chinese-simplified/) 帐 

## More BIP39 Words Starting with "U"

[ #1902 unit ](/bip39-word/unit/)[ #1903 universe ](/bip39-word/universe/)[ #1904 unknown ](/bip39-word/unknown/)[ #1905 unlock ](/bip39-word/unlock/)[ #1907 unusual ](/bip39-word/unusual/)[ #1908 unveil ](/bip39-word/unveil/)[ #1909 update ](/bip39-word/update/)[ #1910 upgrade ](/bip39-word/upgrade/) 

[View all words starting with "U" ](/bip39-words/u/) 

## Seed phrase, key and recovery guides

- [How to Encrypt a Seed Phrase: AES, XOR and Steganography](/seed-phrase-encrypting-with-aes-xor-and-steganography/)
- [Bitcoin Improvement Proposal (BIP): Process and Deployed BIP List](/bitcoin-improvement-proposal/)
- [TON Seed Phrase: 24-Word Format vs 12-Word BIP39 Phrases](/seed-phrase-format-for-ton-wallets/)

[ Full BIP39 Wordlist ](/)